Coexistence of ferromagnetism and Kondo effect in the underscreened Kondo lattice

N. B. Perkins, J. R. Iglesias, M. D. Nú̃ez-Regueiro, B. Coqblin

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Abstract

The coexistence of ferromagnetic order and Kondo behavior, that has been experimentally observed in some uranium compounds, is studied in the framework of an underscreened Kondo lattice model within the mean-field approach. For small values of JK compared to the bandwidth, a ferromagnetically ordered solution is obtained, while for larger values of JK a Kondo regime occurs with a Kondo temperature larger than the Curie temperature, suggesting a scenario for the coexistence of Kondo effect and ferromagnetic order.

Original languageEnglish (US)
Article number57006
JournalEPL
Volume79
Issue number5
DOIs
StatePublished - Sep 1 2007

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